boyden



2 Sheets-Sheet 1.

ROVING MACHINERY.

Patented May 9,1876.

Wfimssas M MPEIERS, PNOTD-UTMDGRAPHBL WASHINGTON, D C.

I ZSheets-SheetZ. E. BOYDEN. 4 ELECTRO-MAGNETIC STOP-MOTION FOR DRAWING0R ROVING MACHINERY. No.177,058. Patented May 9,1876.

N-PETERS, PHOTO-LITHOGRAPHER. WAQNINGTON, D C,

PATENT OFFICE.

ERASTUS BOYDEN, or LOWELL, MASSACHUSETTS.

IMPROVEMENT lN ELECTRO-MAGNETIC STOP-MOTIONS FOR DRAWING 0R ROVlNGMACHINERY.

Specification forming part of Letters Patent No, 1 77,058, dated May 9,1876; application filed March 25, 1876.

To all whom it may concern: I

Be it known that I, ERASTUS BOYDEN, of Lowell, in thecounty of Middlesexand State of Massachusetts, have invented certain new and usefulImprovements in Electro-Magnetic Stop-Motions for Drawingor Rovingchinery, of which the following is a specificatio'rii My inventionrelates, first, to certain improvements in the latching mechanism, theobject of this part of my invention being to secure greater certainty inthe automatic working'of the several parts; second, to certainimprovements in the construction of the roving-guides, and the method ofhanging them upon metallic edges, the object of this part of myinvention being to secure greater lightness" and sensitiveness in theaction of the guides; third, to a new and improved device for closingthe circuit when the end runs through or the roving breaks, the objectof this part of my invention being to secure a more certain. andsensitive method of closing the circuit; fourth, to a new and improveddevice for opening the circuit at the same instant that the belt-shipperis released, the object of this part of my invention being to preventany waste of battery-power, which would occur were the circuit to remainclosed for any sensible period of time.

1n the drawings, Figure 1 represents a front elevation of the latchingmechanism and'sliding shipper-bar with my improved circuitopener'. Figs.2 and 3 are front views of thread-guides, to which are attached myimproved circuit closer or connector. Fig. 4 is a top view of thelatching mechanism. Figs.

' 5 and 6 are vertical sections of my improved thread-guides andcircuit-closer.

A is the box in which is placed the latching mechanism andcircuit-opener. A is a metal plate screwed to the side of the box, andupon which the several parts of the latching mechanism are fastened. Iis a piece of rubber having the two legs I and 1 Scout as to form aspring, as shown in Fig. 1.

The box A is attached to the machine in any convenient position, so thatthe sliding bar B may be easily connected with the shipper-levenand atthe same time allow the latter to work independently of the former.

The battery is placed in any convenient ilace and one wire from thebatterv con-.

nects with the electro-inagnet F,passes through the Spring-legs l and lof the rubber I, and

through the thread guide rail K, Fig.2 or.3,'

and ends at f. .The other wire, g, pas'ses directly from the batterythrough the rail K parallel with and alongside of the wire f,and ends atg. p p

Within the sliding bar B is a coil-spring, d, one end of whichis placedagainst a post, 01', upon which the bar slides, while the other end of.the spring operates against the sliding bar. Upon the inner end of theSliding Shipper-bar is placed a lug, J, which may be easily adjusted bymeans of the slot and screw 00, This lug bears against the spring-leg I.

In each spring-leg of the rubber I is'a nie- I tallic knob,i i, each ofwhich is connected with the wire f. When the Sliding bar is inposition'the'lug J presses the leg I against the leg 1, so that the twoknobs i t touch each other and keep the circuit closed iii the box; butwhen the sliding bar is released the Spring-legs of the rubber arereleased and spring apart, thus separating the knobs t" and opening thecircuit in the box instantly. Y

C is a spring-latch, which catches the short arm of the bent lever D,while the long arm is caught by the stud a. H is the armature, which isbent at right angles and hung upon a pin, so that the weight of the armb will more than balance the weight of the armature H, and throw it outof a perpendicular line and away from the magnet, thus enabling it tocatch the lever E, which oscillates upon the pin 2. 7 Upon the lever Eis placed the arm Gr, bent at right angles at its upper end, as shown atG, Fig. 4.

Hitherto it has been found that when the magnet attracts the armature Hand releases the catch-levers, the coil-spring d operates with suchforce as to throw the lever D up to the top of the box, and before itfalls back into its position the lever E falls, thus preventing thelever D from falling below the stud a,

and prevents the automatic latching of the mechanism when the slidingbar is returned.

In order to avoid this difficulty I attach the arm G to the lever E insuch position, and bent at its upper end, that when the lever D'fliestumes-described, it will strike against the bent end ot' the armGand rebound under the stud a, while the pin 0 in the lever E willprevent the lever D from falling to the bottom of the box, whereby thelever D is always kept in place, so that the spring-latch (lwillautomatically catch behind its short end a. I thus insure the com'ile'teautomatic adjustment ofthelatching'niechanism to the shipperlever. Y

M is one form of my improved roving-guide, which is attached to therailK by means of the saddles 0 o resting upon the metallic edge 0, thussecuring a more light and sensitive adjustment than if pivoted in theusual way.

The lower part of this guideis bent at right angles inward, and upon theupper side of this end, and directly under the two wires, is placed andcontinued wear.

I11 front of the guide M is placed a bar or finger, m, in such positionrelative to the guide M, that the bulk of the roving, however fragile,will prevent the guide from falling, and thus keep the circuit open byits bulk, instead of the tension of the thread. This form ofthreadguide, with its bar or-finger m, is found especially valuable forbulky and fragile threads or rovings. The circuit-closer n, touchingboth wires, thus closes the circuit whenever the guide falls over thefinger m. The rail K is placed in such position on the roving-frame,that a guide will be directly in front of each bobbin.

L is another form of my improved guide hung upon a metallic edge, in themanner above described, and provided with my improved circuit-closer, inwhich the tension or weight of the roving holds the guide back,

and keeps the circuit open.

This form of guide may be used with a strong roving, while the former isadapted to a frangible roving.

When the frame is in motion, the roving from the bobbin passes under thefinger m, and through the guide M, the latter beingso balanced on themetallic edge 0 that the bulk of the roving, however fragile, willprevent keep the circuitopen.

the guide from falling. over. the fingerjhnd- When the end of the runsthrough the guide, either because the roving breaks or unwinds from thebobbin. the guide M falls forward, and causes the circuit-closer n s tocomplete the circuit, when the magnet attracts the armature H andreleases the catch-levers,

and the coil-spring throws the sliding bar,

which, being connected with the shipper-lever, throws the latter andstops the frame. At the same instant that the sliding bar is thrown out,the spring-leg I of the rubber I is re. leased from the. pressure of thelug J, and

springs back, separating the two knobsii i and opening the circuit againinstantly. This prevents any waste of battery-power, thecircuit beingopen in the rail when it is closed in thebox, and opened in the'box atthe same instant it is closed in the rail. When the frame is startedagain, the action of the ship .per-lever presses the sliding bar backintogthe box, and sets the latching mechanism. @My

improved arm G prevents the lever 1) front,

getting out of place, while the shipper-lever, being loosely connectedwith the sliding bar, can be worked independently of it, andthe framestarted and stopped whenever necessary without operating the stop-motionmachine, thus again preventing any unnecessary loss of battery-power.

I claim as new and of my invention-- l. The combination, with the leversE and D, of the stud a and arm G, substantially as described.

- 2. The combination of the two wires f g from a battery, with thebalanced or oscillatin g circuit-closer 11., substantially asdescribed.-

3. The thread-guide M, provided with a circuit-closer attachment, andcombined with the metallic edge 0 by the saddles o o, substantially asdescribed.

4. The balanced thread-guide M, in combination with the finger m,substantially as described.

5. The metallic points z i, placed upon the leg I and the spring-1eg I,in combination with the lug J actuated by the shipper-bar,

substantially as described. i ERASTUS "BOYDEN. Witnesses:

D. HALL RICE, ALFRED K. GARLAND.

